<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Release Notes</title>
<link rel="stylesheet" href="../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset">
<link rel="up" href="../boost_units.html" title="Chapter 44. Boost.Units 1.1.0">
<link rel="prev" href="version_id.html" title="Version Info">
<link rel="next" href="TODO.html" title="TODO">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table cellpadding="2" width="100%"><tr>
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../boost.png"></td>
<td align="center"><a href="../../../index.html">Home</a></td>
<td align="center"><a href="../../../libs/libraries.htm">Libraries</a></td>
<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
<td align="center"><a href="../../../more/index.htm">More</a></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="version_id.html"><img src="../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../boost_units.html"><img src="../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="TODO.html"><img src="../../../doc/src/images/next.png" alt="Next"></a>
</div>
<div class="section">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="boost_units.ReleaseNotes"></a><a class="link" href="ReleaseNotes.html" title="Release Notes">Release Notes</a>
</h2></div></div></div>
<p>
      1.2 (March 2010)
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
          Added autoprefix ready for Boost 1.43
        </li></ul></div>
<p>
      1.0.0 (August 1, 2008) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
          Initial release with Boost 1.36
        </li></ul></div>
<p>
      0.7.1 (March 14, 2007) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          Boost.Typeof emulation support.
        </li>
<li class="listitem">
          attempting to rebind a heterogeneous_system to a different set of dimensions
          now fails.
        </li>
<li class="listitem">
          cmath.hpp now works with como-win32.
        </li>
<li class="listitem">
          minor changes to the tests and examples to make msvc 7.1 happy.
        </li>
</ul></div>
<p>
      0.7.0 (March 13, 2007) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          heterogeneous and mixed system functionality added.
        </li>
<li class="listitem">
          added fine-grained implicit unit conversion on a per fundamental dimension
          basis.
        </li>
<li class="listitem">
          added a number of utility metafunction classes and predicates.
        </li>
<li class="listitem">
          <code class="computeroutput"><a class="link" href="Reference.html#header.boost.units.operators_hpp" title="Header &lt;boost/units/operators.hpp&gt;">boost/units/operators.hpp</a></code>
          now uses <code class="computeroutput"><span class="identifier">BOOST_TYPEOF</span></code> when
          possible.
        </li>
<li class="listitem">
          angular units added in <code class="computeroutput"><a class="link" href="Reference.html#header.boost.units.systems.angle.gradians_hpp" title="Header &lt;boost/units/systems/angle/gradians.hpp&gt;">boost/units/systems/angle/gradians.hpp</a></code>
          and <code class="computeroutput"><a class="link" href="Reference.html#header.boost.units.systems.angle.gradians_hpp" title="Header &lt;boost/units/systems/angle/gradians.hpp&gt;">boost/units/systems/angle/gradians.hpp</a></code>.
          Implicit conversion of radians between trigonometric, SI, and CGS systems
          is allowed.
        </li>
<li class="listitem">
          a variety of <span class="underline"><code class="computeroutput"><a class="link" href="../boost/units/unit.html" title="Class template unit">unit</a></code></span>
          and <span class="underline"><code class="computeroutput"><a class="link" href="../boost/units/quantity.html" title="Class template quantity">quantity</a></code></span>
          tests added.
        </li>
<li class="listitem">
          examples now provide self-tests.
        </li>
</ul></div>
<p>
      0.6.2 (February 22, 2007) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          changed template order in <code class="computeroutput"><span class="identifier">unit</span></code>
          so dimension precedes unit system
        </li>
<li class="listitem">
          added <code class="computeroutput"><span class="identifier">homogeneous_system</span><span class="special">&lt;</span><span class="identifier">S</span><span class="special">&gt;</span></code> for unit systems
        </li>
<li class="listitem">
          incorporated changes to <code class="computeroutput"><a class="link" href="Reference.html#header.boost.units.dimension_hpp" title="Header &lt;boost/units/dimension.hpp&gt;">boost/units/dimension.hpp</a></code>
          (compile-time sorting by predicate), <code class="computeroutput"><a class="link" href="Reference.html#header.boost.units.conversion_hpp" title="Header &lt;boost/units/conversion.hpp&gt;">boost/units/conversion.hpp</a></code>
          (thread-safe implementation of quantity conversions), and <code class="computeroutput"><a class="link" href="Reference.html#header.boost.units.io_hpp" title="Header &lt;boost/units/io.hpp&gt;">boost/units/io.hpp</a></code>
          (now works with any <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span></code>)
          by SW
        </li>
<li class="listitem">
          added abstract units in <code class="computeroutput"><a class="link" href="Reference.html#header.boost.units.systems.abstract_hpp" title="Header &lt;boost/units/systems/abstract.hpp&gt;">boost/units/systems/abstract.hpp</a></code>
          to allow abstract dimensional analysis
        </li>
<li class="listitem">
          new example demonstrating implementation of code based on requirements
          from Michael Fawcett (<a href="../../../libs/units/example/radar_beam_height.cpp" target="_top">radar_beam_height.cpp</a>)
        </li>
</ul></div>
<p>
      0.6.1 (February 13, 2007) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          added metafunctions to test if a type is
          <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
<li class="listitem">
                a valid dimension list (<code class="computeroutput"><span class="identifier">is_dimension_list</span><span class="special">&lt;</span><span class="identifier">D</span><span class="special">&gt;</span></code>)
              </li>
<li class="listitem">
                a unit (<code class="computeroutput"><span class="identifier">is_unit</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code>
                and <code class="computeroutput"><span class="identifier">is_unit_of_system</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">,</span><span class="identifier">System</span><span class="special">&gt;</span></code>)
              </li>
<li class="listitem">
                a quantity (<code class="computeroutput"><span class="identifier">is_quantity</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code> and <code class="computeroutput"><span class="identifier">is_quantity_of_system</span><span class="special">&lt;</span><span class="identifier">Q</span><span class="special">,</span><span class="identifier">System</span><span class="special">&gt;</span></code>)
              </li>
</ul></div>
        </li>
<li class="listitem">
          quantity conversion factor is now computed at compile time
        </li>
<li class="listitem">
          static constants now avoid ODR problems
        </li>
<li class="listitem">
          unit_example_14.cpp now uses Boost.Timer
        </li>
<li class="listitem">
          numerous minor fixes suggested by SW
        </li>
</ul></div>
<p>
      0.6.0 (February 8, 2007) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
          incorporated Steven Watanabe's optimized code for dimension.hpp, leading
          to <span class="bold"><strong>dramatic</strong></span> decreases in compilation time
          (nearly a factor of 10 for unit_example_4.cpp in my tests).
        </li></ul></div>
<p>
      0.5.8 (February 7, 2007) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          fixed <code class="computeroutput"><span class="preprocessor">#include</span></code> in <code class="computeroutput"><a class="link" href="Reference.html#header.boost.units.systems.si.base_hpp" title="Header &lt;boost/units/systems/si/base.hpp&gt;">boost/units/systems/si/base.hpp</a></code>
          (thanks to Michael Fawcett and Steven Watanabe)
        </li>
<li class="listitem">
          removed references to obsolete <code class="computeroutput"><span class="identifier">base_type</span></code>
          in <span class="underline">__unit_info</span> (thanks to Michael
          Fawcett)
        </li>
<li class="listitem">
          moved functions in <code class="computeroutput"><a class="link" href="Reference.html#header.boost.units.cmath_hpp" title="Header &lt;boost/units/cmath.hpp&gt;">boost/units/cmath.hpp</a></code>
          into <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">units</span></code> namespace (thanks to Steven Watanabe)
        </li>
<li class="listitem">
          fixed <code class="computeroutput"><span class="preprocessor">#include</span></code> guards
          to be consistently named <code class="computeroutput"><span class="identifier">BOOST_UNITS_XXX</span></code>
          (thanks to Steven Watanabe)
        </li>
</ul></div>
<p>
      0.5.7 (February 5, 2007) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          changed quantity conversion helper to increase flexibility
        </li>
<li class="listitem">
          minor documentation changes
        </li>
<li class="listitem">
          submitted for formal review as a Boost library
        </li>
</ul></div>
<p>
      0.5.6 (January 22, 2007) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          added IEEE 1541 standard binary prefixes along with SI prefixes to and
          extended algebra of <code class="computeroutput"><span class="identifier">scale</span></code>
          and <code class="computeroutput"><span class="identifier">scaled_value</span></code> classes
          (thanks to Kevin Lynch)
        </li>
<li class="listitem">
          split SI units into separate header files to minimize the "kitchen
          sink" include problem (thanks to Janek Kozicki)
        </li>
<li class="listitem">
          added convenience classes for declaring fundamental dimensions and composite
          dimensions with integral powers (<code class="computeroutput"><span class="identifier">fundamental_dimension</span></code>
          and <code class="computeroutput"><span class="identifier">composite_dimension</span></code>
          respectively)
        </li>
</ul></div>
<p>
      0.5.5 (January 18, 2007) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          template parameter order in <code class="computeroutput"><span class="identifier">quantity</span></code>
          switched and default <code class="computeroutput"><span class="identifier">value_type</span></code>
          of <code class="computeroutput"><span class="keyword">double</span></code> added (thanks to
          Andrey Semashev and Paul Bristow)
        </li>
<li class="listitem">
          added implicit <code class="computeroutput"><span class="identifier">value_type</span></code>
          conversion where allowed (thanks to Andrey Semashev)
        </li>
<li class="listitem">
          added <code class="computeroutput"><span class="identifier">quantity_cast</span></code> for
          three cases (thanks to Andrey Semashev):
          <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
<li class="listitem">
                constructing <code class="computeroutput"><span class="identifier">quantity</span></code>
                from raw <code class="computeroutput"><span class="identifier">value_type</span></code>
              </li>
<li class="listitem">
                casting from one <code class="computeroutput"><span class="identifier">value_type</span></code>
                to another
              </li>
<li class="listitem">
                casting from one <code class="computeroutput"><span class="identifier">unit</span></code>
                to another (where conversion is allowed)
              </li>
</ul></div>
        </li>
<li class="listitem">
          added<code class="computeroutput"> <span class="identifier">metre</span></code> and <code class="computeroutput"><span class="identifier">metres</span></code> and related constants to the SI
          system for the convenience of our Commonwealth friends...
        </li>
</ul></div>
<p>
      0.5.4 (January 12, 2007) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          completely reimplemented unit conversion to allow for arbitrary unit conversions
          between systems
        </li>
<li class="listitem">
          strict quantity construction is default; quantities can be constructed
          from bare values by using static member <code class="computeroutput"><span class="identifier">from_value</span></code>
        </li>
</ul></div>
<p>
      0.5.3 (December 12, 2006) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          added Boost.Serialization support to <code class="computeroutput"><span class="identifier">unit</span></code>
          and <code class="computeroutput"><span class="identifier">quantity</span></code> classes
        </li>
<li class="listitem">
          added option to enforce strict construction of quantities (only constructible
          by multiplication of scalar by unit or quantity by unit) by preprocessor
          <code class="computeroutput"><span class="identifier">MCS_STRICT_QUANTITY_CONSTRUCTION</span></code>
          switch
        </li>
</ul></div>
<p>
      0.5.2 (December 4, 2006) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
          added <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">cmath</span><span class="special">&gt;</span></code> wrappers in the <code class="computeroutput"><span class="identifier">std</span></code>
          namespace for functions that can support quantities
        </li></ul></div>
<p>
      0.5.1 (November 3, 2006) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          converted to Boost Software License
        </li>
<li class="listitem">
          boostified directory structure and file paths
        </li>
</ul></div>
<p>
      0.5 (November 2, 2006) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          completely reimplemented SI and CGS unit systems and changed syntax for
          quantities
        </li>
<li class="listitem">
          significantly streamlined <code class="computeroutput"><span class="identifier">pow</span></code>
          and <code class="computeroutput"><span class="identifier">root</span></code> so for most applications
          it is only necessary to define <code class="computeroutput"><span class="identifier">power_typeof_helper</span></code>
          and <code class="computeroutput"><span class="identifier">root_typeof_helper</span></code>
          to gain this functionality
        </li>
<li class="listitem">
          added a selection of physical constants from the CODATA tables
        </li>
<li class="listitem">
          added a skeleton <code class="computeroutput"><span class="identifier">complex</span></code>
          class that correctly supports both <code class="computeroutput"><span class="identifier">complex</span><span class="special">&lt;</span><span class="identifier">quantity</span><span class="special">&lt;</span><span class="identifier">Y</span><span class="special">,</span><span class="identifier">Unit</span><span class="special">&gt;</span> <span class="special">&gt;</span></code>
          and <code class="computeroutput"><span class="identifier">quantity</span><span class="special">&lt;</span><span class="identifier">complex</span><span class="special">&lt;</span><span class="identifier">Y</span><span class="special">&gt;,</span><span class="identifier">Unit</span><span class="special">&gt;</span></code>
          as an example
        </li>
<li class="listitem">
          investigate using Boost.Typeof for compilers that do not support <code class="computeroutput"><span class="identifier">typeof</span></code>
        </li>
</ul></div>
<p>
      0.4 (October 13, 2006) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          <code class="computeroutput"><span class="identifier">pow</span><span class="special">&lt;</span><span class="identifier">R</span><span class="special">&gt;</span></code>
          and <code class="computeroutput"><span class="identifier">root</span><span class="special">&lt;</span><span class="identifier">R</span><span class="special">&gt;</span></code>
          improved for user-defined types
        </li>
<li class="listitem">
          added unary + and unary - operators
        </li>
<li class="listitem">
          added new example of interfacing with <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">math</span><span class="special">::</span><span class="identifier">quaternion</span></code>
        </li>
<li class="listitem">
          added optional preprocessor switch to enable implicit unit conversions
          (<code class="computeroutput"><span class="identifier">BOOST_UNITS_ENABLE_IMPLICIT_UNIT_CONVERSIONS</span></code>)
        </li>
</ul></div>
<p>
      0.3 (September 6, 2006) :
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
          Support for <code class="computeroutput"><span class="identifier">op</span><span class="special">(</span><span class="identifier">X</span> <span class="identifier">x</span><span class="special">,</span><span class="identifier">Y</span> <span class="identifier">y</span><span class="special">)</span></code> for g++ added. This is automatically active
          when compiling with gcc and can be optionally enabled by defining the preprocessor
          constant <code class="computeroutput"><span class="identifier">BOOST_UNITS_HAS_TYPEOF</span></code>
        </li></ul></div>
<p>
      0.2 (September 4, 2006) : Second alpha release based on slightly modified code
      from 0.1 release
    </p>
<p>
      0.1 (December 13, 2003) : written as a Boost demonstration of MPL-based dimensional
      analysis in 2003.
    </p>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright © 2003-2008 Matthias Christian Schabel<br>Copyright © 2007-2010 Steven
      Watanabe<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
</div></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="version_id.html"><img src="../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../boost_units.html"><img src="../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="TODO.html"><img src="../../../doc/src/images/next.png" alt="Next"></a>
</div>
</body>
</html>
